Identified Amino Acid Permeases of Synechocystis sp. Strain PCC 6803
| Permease | TC family[i] | Substrate(s) | ORF | Gene | Putative gene-product |
| Nat | 3.A.1 | Neutral amino acids and histidine | slr0467 | natA | ATP-binding subunit |
| slr0559 | natB | Periplasmic substrate-binding protein | |||
| sll0146 | natC | Integral membrane protein | |||
| slr0949 | natD | Integral membrane protein | |||
| slr1881 | natE | ATP-binding subunit | |||
| Bgt | 3.A.1 | Basic amino acids and glutamine | slr1735 | bgtA | ATP-binding subunit |
| sll1270 | bgtB | Periplasmic substrate-binding and integral membrane protein | |||
| GltS | 2.A.27 | Glutamate | slr1145 | gltS | Monocomponent permease |
| Gtr | 2.A.56 | Glutamate | sll1102 | gtrA | Integral membrane protein |
| sll1103 | gtrB | Integral membrane protein | |||
| sll1104 | gtrC | Periplasmic substrate-binding protein |
[i] Transporter classification (TC) family according toSaier (2000): 3.A.1, ABC-type uptake permeases; 2.A.27, glutamate: Na+ symporter family; 2.A.56, tripartite ATP-independent periplasmic transporter family.